Only the most intelligent homicidial maniac ever. Created by Matt Groening... tried to kill Bart, Selma, Krusty... many people, actually. See above.
'AAAAAH! SIDESHOW BOB!' 'Oh, we've been through so much together... just call me Bob.' 'AAAAAAAAAAAAAH! BOB!'
by GizGaz September 1, 2005

by Akaksksios July 11, 2020

When someone who is participating in a "sideshow" has run short on funds and/or vehicles, and thus can no longer participate in the "sideshow".
Nick, just shortly after moving to the Bay Area, wrecked his Cadillac and his School bus at the sideshow. Word spread quickly that he was all sideshowed out.
by 540-434 February 24, 2009

Sideshow Bob existed before the Simpsons, the expression is a generic term for any insignificant person. More likely to be used by a cheeky mate or a toxic friend rather than an enemy.
by mongrelbeast January 12, 2008

by Iam not Elmer Fudd December 28, 2019

The act of stabbing/shanking somebody in the side, stretching out the wound and proceeding to have intercourse with the wound. Adding insult to injury
by Joey B.D. June 16, 2010

I have a sideshowitis
by PJ.Wilson December 26, 2018
